Check-rower for corn-planters



(No Model.)

`J. M. ROBERTS.

CHECK ROWBR FOR CORN PLANTBRS. No. 288,817. y Patented Aug. 28, 1883.

N. PETERS. Pmlmuwzguphnr, wnhingnm. 0.a

ITED 'rATns JOB M. ROBERTS, OF PANA, ILLINOIS.

CH ECKROWER FOR CORNQPLANTERS.

SEC'IFICATION forming part of ietters Patent No. 283,817, dated August 28, 1883.

Application filed April 23, 1683. (Nomodcl.)

To all whom it may concern.-

Be it known that I, JOB M. RoBERTs, la resident of Pana, in the countyof Christian and State of Illinois, have invented certain new and usefulImprovements in Check-Bowers for Corn-Planters, of which the followingis a full, clear, and exact specification. f

My invention relates to that class of checkrowers which are operated bya smooth cord, which is stretched across the eld and anchored; and myinvention consists in the device used to convert the continuousresistance of said cord against the motion of the planter intoreciprocating motion in the seed-slides thereof.

My invention also consists in the device used to neutralize the jar inthe drop when the stroke of the check-rower is longer than the stroke ofthe seed-slide.

In the drawings accompanying and forming a part of this specification, ais a cylinder, rigid on its shaft, and provided with deiiected groove gin its circumference. 4

b is a V- grooved pulley that works loosely on the shaft of thecylinder, and over which the cord passes.

c is a lever, provided with a suitable arm or projection, d, thatengages a groove in a shoulder of the pulley b.

e e are guide-pulleys that hold the cord in position on the main pulley.j

f f are uprights that are detachably secured to bar m, and in whichcylinder a and pulley b are supported.

1L z' h 11 are receiving and discharging.;` pulleys for cord n.

o is a horizontal projection from the checkrow bar that forms a pivotalsupport for lever p,

r is the rod that connects the seed-slide q" with lever p. n

s t is the device used to neutralize the jar of the stroke, and a is aprojection of suitable form to engage cylinder a.

Figure 1 is a plan of my device. Fig. 2

is an elevation of the central portion thereof,

showing the cylinder and pulley disconnected and uprights f f joinedtogether, as I prefer to make them; and Fig. 3 shows the operation of myj arneutralizing device.

In operation, pulley b is thrown in contact with cylinder a, and bothpulley aid cylinder are continuously rotated by cord n. Lever p isprovided with an anti-friction roller that fits in groove g, and bymeans of which said lever is made to oscillate as the cylinder rotates.The oscillating motion of lever p is conveyed to the seed-slide throughrod r. In case the stroke of lever p should be longer than the stroke ofthe seed-slide, disk s will give a partial revolution, as shown in Fig.3, and the pivot of said disk may be held out of line with rod r, and adead-lock be thereby prevented byproj ection t coming in contact withthe spur z on the disk s. In making a turn at the end of the eld ,pulleyb is thrown out of contact with cylinder a and permitted to rotateloosely on the shaft until the planter is again in proper position, whenthe connection between said pulley and cylinder is re-established andthe drop- 7o ping effected, as heretofore described. The pulley b ismade to revolve once while the planter traverses twice the distancebetween rows, and one revolution produces two complete motions of theseed-slides.

I claiml. Cylinder a, provided with groove g, pulley b, provided with agrooved shoulder, and arm o, provided with projection d, in combinationwith uprights f f, projection o, and lever p, as and for the purpose setforth.

2. The combination, with pulley t, cylinder a, and guide-pulleys e e, ofpulleys h i h c, as and for the purpose set forth.

f3. lThe combination of rod r, bar q, disk s, spur z, and projection t,as and for the purpose set forth.

Jos M. nonunrs.

Witnesses:

JOHN LnMnnuernu, B. A.. COX.

